Platen-releasing device.



PATENTED JUNE 4, 1907.

' 'n W5/V70@ 5y g i f ATTO/PA( V W RUGBR, JR PLATBN RBLBASING DEVIGE.

APPLICATION FILED AUG. 15, 1905.

#vg/i556 '@M 414 WILLIMI R OF NEW JERSEY.

IGEB., JR., OF JANESVILLE, WIISCONSIN, ASSIGNOl-t TO UNDER- WOOD TYPEWRITER COMPANY, OF NEW anni urines.

YORK, N.A Y., A CORPORATION marsan-newseme. Device.

Specification of Letters Patent.

Patented Tune-.4, 1907.

Application led August 15,1905. Serial No. 274.259.

Be it known that I, WILLIAM RUGER, Jr.,

a citizen of the United States, residingin Janesville, in the county of Rock and State of Wisconsin, have invented certain new and useiul Improvements in ljlaten Releasing Devices for Type-Iriting Machines, of which the following is a speciiication.

This invention relates to the revoluble platens of typeuuciting machines, and its object is to provide a simple, inexpensive, etlicient and durable mechanism for releasing the platen at will from the lineespaoe ratchet wheel, so as to permit the platen to be rotated independently ol said wheel for writing upon ruled lines, or at intervals different from the usual line-space interva s.

In carrying out my. invention, I provide a cone-clutch or e( uivalent device lbetween the 'line-space wheel and the platen, .and one member of the cone-clutch I control by means oi' a ringer-piece which is mounted upon the outer side of the usual hand-wheel that rotates the platen. By turning said iinger piece in one direction, the platen is released, so that it may be rotated by said handwheel to any desired point; and by turning said fnger-piece in the opposite direction the clutch is closed, and then said hand wheel may be used for rotating the platen any desired number of usual line spaces.

In the accompanying drawings, Figure 1 is a sectional plan of a portion oi' a platen and appurtenances of a typewriting machine with my improvements applied'thereto, the clutch being shown open so that the platen is released from the line-space wheel. Fig. 2 is a view partly in section but otherwise similar to Fig. 1, and showing the clutch closed, so that the platen and line-space wheel are locledtogether. Fig. 3 is' an elevation of the outer side of the hand wheel seen at Fig.

1, showing the locking member andA appurte-V nances. lFig. 4 is a, sectional view taken about theline X-X of Fig. 2, and showing the/line-space wheel in sideelevation. I f

The platen 1 is iixed u on an axle 2, which is journaled ina boss 3, the latter mounted in a platen frame, one end or side or which is "seen at e. Upon the end ci said axleis driven or secured a tubular extension or .with the clutch member 11.

sleeve 5, and upon the outer end of the latter is rigidly secured a hand the platen is rotated.

'The line-space wheel 7 controlled by the usual roll 8, carried by a spring 9, is mounted loosely upon the platen axle 2, so that the platen is capable of turning While the linespace wheel remains stationary. To said line-space wheel is secured by rivets 10, a cup member 11 of a pair of clutching cones. The other member. 12 of said air is mounted loosely upon the inner end oisaid sleeve 5, so that it may slide into and out of engagement When such engagement is effected, the line space wheel `7 is forced to rotate with the sleeve 5, and hence with the platen, because said cone 12 is splined to said sleeve, the latter being provided with a longitudinal groove 13 and the former with a key. 14. To effect the clutching and unclutching movements of the cone 12, I employ a head or plate 15, rigidly connected by rods 16 with said cone 12, said rods passing through holes 17 in the hand wheel 6, and riveted at their inner ends to the cone and at their outer ends to said plate'l, so

plate outwardly the clutch is opened. For

the purpose of operating said head, I provide a iinger piece 18 shown as consisting of a hub and a pair of wings, although any other form may be employed. This ringer-piece is rig' wheel 6, whereby idly connected by means of a square center pin or key 19 to a bushing 20 within a hollow stem 21, the latter being inserted in the outer end of said sleeve or extension 5 and revolublejreely. therewithin; such revolution being effected by means of said iingerpiece 18, since the bushing 20.is rigidly secured to said stem 21. A central orice 22 is rovided in the plate 15in which theY square ey 19 may turn freely, so that the stem 21 may be turned independently oi the plate 15.

Projecting inwardly from the sleeve 5 near l its outer end is a iixed in 23; and in said hollow stem 21 is providled a helical slot 24 to engage said pin, said slot also having an elongation or o ening 25 extending longitudinally ci? the ollow stem, to permit endwise movement thereof.

ICO.

In operation, if the clutch is releasedLas 1, .it is only necessary to .press the linger are all cammed or drawn toward the right at Fig. 1, until the cone 12 moved by the rods 16 is forced into firm eng ement with the cup 11. The pitch of the elical slot 24 is such that by turning the finger piece 18 with 4some force, said clutch members are locked together, and cannot become separated ex-l cept by the application of manual force to the nger piece 18 to turn it to the left, 'as at Fig. 2'. When the iinger piece`18- isl turned to the left, the helical slot 24 acts u on the pin 23 and-hence the clutch is opene by the means already described. Preferably, however, l employ acom ression spring26 between the late 15 an the outer face of the hand whee 6, to eliect movement toward the left of the clutchcone 12 and associated parts at the releasing operation.

When the clutch is o en, the hand Wheel 9 is used Jfor rotating the platen;, said hand wheel being iixed upon 'the sleeve 5, vwhich is ixed upon the platen axle 2. v

Having thus described my invention,v l claim:

1. lnatypewriting machine, the combina- -tion with a revoluble laten, and a platen frame, of an axle to w 'ch the platen is se'- cured, a line-space wheel loose on said axle and provided with a clutch member, a sleeve iixed upon the end of said axle and having a longitudinal slot, a co-operative clutch member movable along said sleeve and having a projection to engage said slot, a hand wheel iixed upon said sleeve, rods attached to the last-mentioned clutch member and assing along said sleeve and through said and wheel, a head connecting said rods upon the outer side of said hand Wheel, and means acting upon said head for locking said clutch lin closed position. n

2. ln la typewriting machine, the combination with a revoluble platen,and a platen frame, of an axle to which the platen is se-` cured, a line-space Wheel loose on said axle and provided witha clutch member, a sleeve fixed upon the end of said axle and having a longitudinal slot, a (1ooperative clutch member movable along said sleeve and having a projection to engage said slot, a handwheel iixed .upon said sleeve, rods attached to the last-mentioned clutch member and passing along said sleeve and through said hand wheel, a head connecting said rods upon the outer side of said hand wheel, a iingerieee having. an axially movable' stem revo ubly mounted in the end of said sleeve and having a helical groove, and a pinprojecting within said sleeve and engaging said groove.

3. ln a typewritingmachine, the combina- -tion with a revoluble platen, and a platen frame, ofanaxl'e to which the platen is secured, a line-space Wheel loose on said axle and provided with a cup, a sleeve iixed upon the end "of said axle and having a longitudinal slot, a cone movable along said sleeve andv vhaving'fa projection to engage said slot, ahandwheel 'ixed upon said ing along .sleeve and through said hand Wheel, aplate cqnnecting said rod upon the outer'side of said hand Wheel, a finger-piece .having ail 'axiallymovable stem revolubly .mounted in the endof saidsleeve and having a helical locking' groove, said stem being movable axially, and a pin projecting within said sleeveand engaging said groove; said stem projecting through said head between said rods, and said iinger-piece being` mounted upon said st'em at the outer side of said head.

tion with a'revoluble laten, and a platen frame, of an axle to w `cli the platen is secured, al linespace wheel loose on said axle and provided with a cup, a sleeve fixed upon the end of said axle and having a longitudinal slot, acone movable along said sleeve and having a projection to engage said slot, a 4hand wheel fixed upon said sleeve, rods attached` to the vcone and passing along said sleeve and through said hand wheel, a plate connecting said rod upon the outer side of said hand Wheel, a finger-piece having an axially movable stem revolubly`mounted in Vlocking groove, said stem being movable axially, and a pin projecting within said through said head betweensaid projectin d said finger-piece being mounted rods, an

stem between said `head and the tip oi said sleeve, and tending to separate said cone from said cup.

5. lnatypewritin tion with a revolub machine, the combination with a revoluble platen and a platen frame, oi'I an axle to which the laten is secured, a fin er-wheel fixed to sai axle, alinespaee Whee loose on said -axle and provided with a clutch member, a co-operating clutch member splined to said axle, means, including arevoluble finger-piece mounted at the 4. Ina typewriting machine, the combin aupon said stem at the outer side of said head; and a compression spring coiled around said 6. In a typewriting machine, the combinasleeve, rods attached -t'o the cone and passthe end of-said sleeve and having afhelical IOO sleeve and engaging said groove; said stem 11o e 'platenand a platen y Jframe, of an axle to which the laten is sel outer side of said finger Wheel, for locking said clutching members together; and a spring tending to open said clutching members.

7. In a typewriting machine, the combination with a revoluble platen and a platen frame, of an axle upon which the platen is mounted, a line-space wheel loose upon said axde, a sleeve secured upon one end of said axle, a finger wheel ixed upon said sleeve, a finger piece at the outer side of said'iingerwheel and having a stem mounted within said sleeve, a clutch member splined upon said axle and connected to said finger-piece, and a co-operative clutch member secured to said line-space wheel.

. S. In a typewriting machine, the combination with a revoluble platen and a platen frame, of an axle upon which the platen is mounted, a line-space wheel loose upon said axle, a vsleeve fixed upon one end of said axle, a finger wheel fixed upon said sleeve, .a finger piece at the outer side of said iinger-wheel and having a stem mounted within said sleeve, a clutching member s lined upon said axle and connected to said ger-piece, and a co-operative clutch member secured to said line-space wheel; said inger-piece being revolubly mounted and capablefof axial movement, and having a locking cam-groove, and said sleeve having a projection engaging said groove 9. In a typewriting machine, the combination with a revoluble platen anda platen frame, of an axle upon which the platen is journaled, a line-space wheel loose upon said axle, a fmger-wheel iixedly mounted upon one end of said axle, a Enger-piece mounted at the outer side of said wheel and having astein supported by Said axle and revoluble independently of the latter, members one whereof is connected to said and clutching l axle and movable by the turning movement of saidiinger-piece, and the other whereof is i secured to said line-space wheel. l, i0. In a typewriting machine, the combination with a revoluble platen and a platen frame, of an axle upon which the platen is journaled, a line-space vheel loose upon said axle, a finger-Wheel ixedly mounted upon one end of said axle', a ingeriece mounted at the outer side of said wheel) and havin a stem supported by said axle and revolu le independently of the latter, and clutching i members one whereof is connected to said' axle and movable by the turning movement of said iinger-piece, and the other whereof is secured to said line-space wheel; means being provided to enablel the movement of said finger-piece to-look said clutching members together.

11. In a typewriting machine, the combination with a revoluble pl atenv and a platen frame, of an axle upon which the platen is journaled, a line-space wheel loose upon said i axle, a finger-wheel ixedly mounted vupon i one end of said axle, a finger-piece mounted 5 at the'outer side of said wheel and having a stein supported by said axle and revoluble independently of the latter, vand clutching members one whereof is connected to said axle Enid movable by, the turning movement of said finger-piece, and the other whereof 5 is securedto said line-space Wheel; meansv being providedto enable the movement of said finger-piece to lock said clutching members together, and a spring tending toopen said'clutching members.

A WM. RUGER, JR.

Witnesses:

WILLIAM RUGER, l N. J.` EMERir..4 

